It's a knee-jerk response based on emotion, not reason. I made a similar argument when Trump was put in office; he hit pretty much every single one of
Umberto Eco's 14 points that define fascism. The one he didn't (#11; "everyone is educated to become a hero"), at the time, he'd met by the time he left office, and the January 6th insurrection demonstrated that in spades.
The entire counter-argument boils down to "But fascism is
bad. My country isn't
bad. I like my country. Therefore it can't be fascism."
That's obviously not an argument at all.
The entire argument completely ignores what fascism
actually is, to present it as a shadowy meaningless monster, just so you can hand-wave the argument being made.
The USA has not only been fascism-adjacent for a
very long time, many of its legal structures were explicitly used
by fascists in forming their own fascist horrors; the Nuremberg transcripts in which the Nazi Reich developed their approach to race laws
explicitly cites the USA's Jim Crow laws as one of their chief inspirations and building blocks.
If you want to argue that the USA is obviously not-fascist, you're gonna need to make an effort to be objective about it, and qualify your arguments regarding an actual academic definition of fascism. Not just "but they're the
baddies. We're not the baddies, are we?"